Initialism of nota bene; used in written English to introduce something to be noted.

Initialism of northbound. / Initialism of non-binary. / Initialism of nonblack.

Abbreviation of northbound.

(US, aviation) Initialism of NASA research bomber plane. (prefix code in designations) / (sports) Initialism of national best. / Abbreviation of newborn. / Abbreviation of neuroblast.

(Canada) Initialism of New Brunswick, a Canadian province. / Abbreviation of West Nusa Tenggara. (a province of Indonesia)

(cricket) Initialism of no ball.

Initialism of nota bene.

Alternative form of NB: initialism of non-binary.

Abbreviation of nanobel.

plural of NB